Heat-non-conducting fabric



F. A. GILCHEST. HEAT NON-CONDUCTING FABRIC. APPLICATION FILED JULY 25.1919.

Patented Mar. 15, 1921.

llll-lIu-ll'lnli'llll I I llllllll Illllllll lllllllfllllll llllllL UNITED STATES PATENT OFFICE.

FRANK A erncnns'r, or PASADENA, CALIFORNIA.

HEAT-NON-CONDUCTIN'G FABRIC.

Specification of Letters Patent.

Patented Mar. 15, 1921.

Application filed July 25, 1919. Serial No. 318,242.

clare the following to be a full, clear, and

exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same,

This invention relates to a new heat nonconducting material adapted for use in theconstruction of body garments, blankets, over-coats, and the like.v

The object isv to provide a freely flexible material or fabric, preferably embodying outer layers of paper and an interposed layer of diatomaceous earth, which latter possesses to a high' degree heat non-conducting qualities.

The invention also provides a fabric or material of this character which may be easily manufactured, and in which the earth or non-conductor usedis held from shifting out of place between the layers.

With these and further objects in view,

i as will in part hereinafter become apparent and in part be stated, the invention comprises certain novel constructions, combinations and arrangements of parts as subsequently'specified and claimed.

In the accompanying drawings,

Figure 1 is a fragmentary plan view of a portion of material or fabric constructed according to this invention. I

Fig. 2 is a section taken through the same substantially on the plane indicated by line 2-2 of Fig. 1, the section being enlarged thickness of the completed fabric throughout its extent.

Referring to the drawing by numerals, 10 and 11 designate the outer layers of paper which form the casing in which the body of infusorial earth 12 is placed. The infusorial earth is preferably diatomite on account of its high degree of non-conductivity of heat, shock, moisture, and'the like. To close the marginal edges of the fabric, one of the 'layers, such as the layer 11, may have an extended marginal edge portion 13 overlapped upon the marginal edge portion of the other layer 10 to form a casing therewith, the overlapping portion 13 being secured tothe layer 10 by a line of stitching 14;: The insulation or packing 12, which is in a finely com-minuted state, is held from shifting betw'een the layers 10 and 11 by the formation of a large number of rel atively small pockets or bags formed by lines of stitching 15 which extend preferably diagonally with respect to the length of the outer layers 10 and 11, and which are crossed. This arrangement of the lines of stitching 16 forms a large number of pockets of substantially diamond formation and within which the earth 12 is retained. The lines of stitching 15 are formed to draw the portions of the layers 10 and 11 between .the diagonal rows of pockets substantially together, as shown in Fig. 2, and thus substantially close the marginal edges of the pockets and prevent the escape of the earth 12 from the pockets. The fabric or maceous earthis in the form of a finefpowder,

- itprovides a filling which is relatively soft and pliable, admitting of the free use of the fabric produced.

The material thus produced is relatively light in weight as compared with its non-, conductin qualities, and is adapted particularly or use in camps, and other exposed places, .where itis necessary to keepthe body warm and where weight and space must necessarily be reduced.

The layers 10 and llof paper are of flexible, soft texture, and are at the 'same'time t ug and du l The paper is. waterproofed by known processes so as to give it capacity to resist bad Weather and trench environments and to insure comfort of the wearer notwithstanding inclement conditions.

What I claim is A'body covering fabric comprising a flexible casing, a-body of diatomaceous earth filling the casing, and crossing lines of 10 stitching secured to the opposite sides of in presence of two witnesses.

FRANK A. GILOREST.

' Witnesses:

Joan S. TANNER,

C. C. MESSIGK. 

